This is a strange one. If I make a consist of crr sd40s 4 at the front and 2 at the back, banking com doesn't work. If I make the same consist with es44s at the back, banking com doesn't work. If I spawn a cjp consist of es44s and remove the es44s from the front and attach crr sd40s then banking com does work?
It seems banking comm only works if the consist has DPUs at the moment of spawning? The whole thing in TSW is overengineered and buggy.
If a spawn a consist that I've made banking com doesn't work. If I spawn a dtg consist and attach my locos to the front it sometimes works. I tried again with ac44s and banking wouldn't work this time. So I spawned the sd70ace 80 tankers and removed the front locos and attached the sd40s and it didn't work. Then I realised that if I have 3 leading sd40s from crr and a gp38 banking comm does work. So it would seem that banking doesn't work at all on crr sd40s unless I have atleast one loco on the leading bunch that works with banking comm.